![Iliyan Malchev](/assets/img/avatar_default.png)
QDSP code is neccessarry for communication with some hardware components on HTC Dream, including camera hardware. It also drives DSP coproccessor. Signed-off-by: Pavel Machek <pavel@ucw.cz> Cc: Brian Swetland <swetland@google.com> Cc: Iliyan Malchev <ibm@android.com> Cc: San Mehat <san@android.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
164 lines
4.6 KiB
C
164 lines
4.6 KiB
C
/* arch/arm/mach-msm/qdsp5/adsp_video_verify_cmd.c
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*
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* Verificion code for aDSP VDEC packets from userspace.
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*
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* Copyright (c) 2008 QUALCOMM Incorporated
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* Copyright (C) 2008 Google, Inc.
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <linux/io.h>
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#define ADSP_DEBUG_MSGS 0
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#if ADSP_DEBUG_MSGS
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#define DLOG(fmt,args...) \
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do { printk(KERN_INFO "[%s:%s:%d] "fmt, __FILE__, __func__, __LINE__, \
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##args); } \
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while (0)
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#else
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#define DLOG(x...) do {} while (0)
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#endif
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#include <mach/qdsp5/qdsp5vdeccmdi.h>
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#include "adsp.h"
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static inline void *high_low_short_to_ptr(unsigned short high,
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unsigned short low)
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{
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return (void *)((((unsigned long)high) << 16) | ((unsigned long)low));
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}
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static inline void ptr_to_high_low_short(void *ptr, unsigned short *high,
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unsigned short *low)
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{
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*high = (unsigned short)((((unsigned long)ptr) >> 16) & 0xffff);
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*low = (unsigned short)((unsigned long)ptr & 0xffff);
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}
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static int pmem_fixup_high_low(unsigned short *high,
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unsigned short *low,
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unsigned short size_high,
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unsigned short size_low,
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struct msm_adsp_module *module,
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unsigned long *addr, unsigned long *size)
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{
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void *phys_addr;
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unsigned long phys_size;
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unsigned long kvaddr;
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phys_addr = high_low_short_to_ptr(*high, *low);
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phys_size = (unsigned long)high_low_short_to_ptr(size_high, size_low);
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DLOG("virt %x %x\n", phys_addr, phys_size);
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if (adsp_pmem_fixup_kvaddr(module, &phys_addr, &kvaddr, phys_size)) {
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DLOG("ah%x al%x sh%x sl%x addr %x size %x\n",
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*high, *low, size_high, size_low, phys_addr, phys_size);
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return -1;
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}
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ptr_to_high_low_short(phys_addr, high, low);
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DLOG("phys %x %x\n", phys_addr, phys_size);
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if (addr)
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*addr = kvaddr;
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if (size)
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*size = phys_size;
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return 0;
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}
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static int verify_vdec_pkt_cmd(struct msm_adsp_module *module,
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void *cmd_data, size_t cmd_size)
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{
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unsigned short cmd_id = ((unsigned short *)cmd_data)[0];
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viddec_cmd_subframe_pkt *pkt;
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unsigned long subframe_pkt_addr;
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unsigned long subframe_pkt_size;
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viddec_cmd_frame_header_packet *frame_header_pkt;
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int i, num_addr, skip;
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unsigned short *frame_buffer_high, *frame_buffer_low;
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unsigned long frame_buffer_size;
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unsigned short frame_buffer_size_high, frame_buffer_size_low;
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DLOG("cmd_size %d cmd_id %d cmd_data %x\n", cmd_size, cmd_id, cmd_data);
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if (cmd_id != VIDDEC_CMD_SUBFRAME_PKT) {
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printk(KERN_INFO "adsp_video: unknown video packet %u\n",
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cmd_id);
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return 0;
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}
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if (cmd_size < sizeof(viddec_cmd_subframe_pkt))
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return -1;
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pkt = (viddec_cmd_subframe_pkt *)cmd_data;
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if (pmem_fixup_high_low(&(pkt->subframe_packet_high),
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&(pkt->subframe_packet_low),
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pkt->subframe_packet_size_high,
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pkt->subframe_packet_size_low,
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module,
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&subframe_pkt_addr,
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&subframe_pkt_size))
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return -1;
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/* deref those ptrs and check if they are a frame header packet */
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frame_header_pkt = (viddec_cmd_frame_header_packet *)subframe_pkt_addr;
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switch (frame_header_pkt->packet_id) {
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case 0xB201: /* h.264 */
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num_addr = skip = 8;
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break;
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case 0x4D01: /* mpeg-4 and h.263 */
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num_addr = 3;
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skip = 0;
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break;
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default:
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return 0;
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}
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frame_buffer_high = &frame_header_pkt->frame_buffer_0_high;
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frame_buffer_low = &frame_header_pkt->frame_buffer_0_low;
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frame_buffer_size = (frame_header_pkt->x_dimension *
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frame_header_pkt->y_dimension * 3) / 2;
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ptr_to_high_low_short((void *)frame_buffer_size,
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&frame_buffer_size_high,
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&frame_buffer_size_low);
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for (i = 0; i < num_addr; i++) {
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if (pmem_fixup_high_low(frame_buffer_high, frame_buffer_low,
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frame_buffer_size_high,
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frame_buffer_size_low,
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module,
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NULL, NULL))
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return -1;
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frame_buffer_high += 2;
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frame_buffer_low += 2;
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}
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/* Patch the output buffer. */
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frame_buffer_high += 2*skip;
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frame_buffer_low += 2*skip;
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if (pmem_fixup_high_low(frame_buffer_high, frame_buffer_low,
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frame_buffer_size_high,
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frame_buffer_size_low, module, NULL, NULL))
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return -1;
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return 0;
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}
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int adsp_video_verify_cmd(struct msm_adsp_module *module,
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unsigned int queue_id, void *cmd_data,
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size_t cmd_size)
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{
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switch (queue_id) {
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case QDSP_mpuVDecPktQueue:
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DLOG("\n");
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return verify_vdec_pkt_cmd(module, cmd_data, cmd_size);
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default:
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printk(KERN_INFO "unknown video queue %u\n", queue_id);
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return 0;
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}
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}
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